Caution: Cars with DSTC systems. When working on
the steering or wheel alignment, the adaptation of the steering wheel
angle must be set to zero using the diagnostic tool. Test drive
according to Test driving schedule for the DSTC system
Note the following
NOTE: When checking and adjusting front wheel alignment the following applies:
Any adjustment of the front camber angle must always be made before adjusting the toe-in
The rear wheels
also have adjustable toe-in. This means that the front wheels must
always be adjusted in relation to the car's thrust line. This is to
achieve the maximum stability and minimize tire wear
All measurements must be made with alignment equipment for four-wheel drive vehicles.
All measurements must be made with the car empty
All measurements must be made with a full fuel tank
Check all the tire pressures before beginning measurement.
Check play
Raise the front end. Lift under the control arms as close to the ball joint as possible.
the ball joints or control arm bushings. If there is play in any of the components above, this must be remedied first.
Lift up the rear suspension.
NOTE: Only toe-in can be adjusted in the rear suspension. The camber angle can only be checked.
Check that there is no play in
the wheel bearings. (If there is play the hub assembly must be replaced)
the control arms, lateral link and track rod. If there is play in any of the components above, this must be remedied first.
Set up the test equipment
Set up the test equipment on the front and rear wheels. Set up the test equipment according to its instructions.
Position the turntables under the front wheels. Use turntables which take up lateral movement.
NOTE: The car must stand level when the front wheels are on the turntables. This is to ensure that the correct values are obtained when checking the camber and caster.
Bounce the front and rear suspension heavily a few times when the
car has sunk onto the turntables. This is so that the suspension
resumes the normal setting.
Checking the rear camber angle
Check the camber angle on both sides.
Correct value: 0°[plusmn] 1.0° .
Checking the rear toe-in
Check that the instruments are adjusted in relation to each other on
the front and rear axles. This is extremely important so that the front
wheel toe-in can be adjusted in relation to the car's thrust line. The
thrust line is the line created when the toe-in angles for the rear wheels are equally divided. See the illustration.
The difference between the symmetry line of the wheels and the thrust line is called the thrust angle. The thrust angle must not deviate by more than 0°[plusmn] 0.25° from the symmetry line of the wheels.
NOTE: The differences in the diagram are heavily exaggerated in order to illustrate the differences.
Correct value: 0.2°[plusmn] 0.2° measured over both wheels.
Measurements are taken at the height of the hub as an angular
measurement or as the difference in mm between front and rear edges of
the wheel at points A (the inner shoulder of the wheel) or B (the flare
of the rim).
Example: The measurement at "A" must be 1.8 [plusmn] 1.8 mm greater than at "a".
Rear Toe In
Adjusting the rear toe-in
Slacken off the inner nut on the track rod
Adjust the toe-in to the correct value. Use the eccentric screw. Tighten the nuts slightly
Check the thrust angle. If it is outside the listed reading, slacken off the nuts and adjust the toe-in again
Tighten the nut. Tighten to 80 Nm .
Checking the front camber angle
Check the camber angle on both sides.
Correct value -0.15°[plusmn] 0.9° .
Adjusting the front camber angle Conditions
The camber angle is adjusted by moving the wheel spindle at the upper
hole in the spring strut outwards or inwards depending on the value
measured.
If the wheel spindle is centered in the spring strut, the degree of adjustment is [plusmn] 0.5°.
Raise the front end.
Remove
the instrument
the wheel. Replace the screws and nuts securing the spring strut to the wheel spindle. Tighten to light contact.
Press the wheel spindle in or out to the maximum depending on the value measured in relation to the spring strut.
Tighten the screws. Tighten to 105 Nm . Angle-tighten 60° .
the instrument and make a new adjustment according to the
instructions. Lower the car on the turn table. Rock the car a few
times. Check the values.
Checking the front caster angle
Check the caster angle on both sides.
The correct value is 4.0°[plusmn] 1.0° . The caster angle must not vary by more than 0.25° between the left and right sides.
Checking the front toe-in
Check that the instruments are adjusted in relation to each other on
the front and rear axles. This is important so that the front wheel
toe-in can be adjusted in relation to the car's thrust line. The thrust
line is the line created when the toe-in angles for the rear wheels are equally divided. See the illustration.
The difference between the symmetry line of the wheels and the thrust line is called the thrust angle. The thrust angle must not deviate by more than 0°[plusmn] 0.25° from the symmetry line of the wheels.
NOTE: The differences in the diagram are heavily exaggerated in order to illustrate the differences.
Correct value: 0.1°[plusmn] 0.1° measured over both wheels.
Measurements are taken at the height of the hub as an angular
measurement or as the difference in rum between front and rear edges of
the wheel at points A (the inner shoulder of the wheel) or B (the flare
of the rim).
Example: The measurement at "A" must be 2.7 [plusmn] 0.9 mm greater than at "a".
Front toe-in
Adjusting the front toe-in
Adjustment is made with the track rods after loosening the lock nuts. Longer rods give a greater angle and vice versa.
NOTE: The lengths of the track rods must not vary between themselves by more than 2 mm
. Measure between the lock nut and the edge of thread. Treat the
threads on the track rods with rust proofing agent, P/N 1161432-8,
after they have been tightened.
Adjusting the steering wheel position
Adjust a minor deviation in the steering wheel at the same time as the toe-in adjustment above.
For larger deviations in the steering wheel, adjust the position of the steering wheel.
